Speed Roll
The blur is what sells the speed; without it, it is just a spin.
Usage
Meant for
Examples
On a Avatar
The blur is what sells the speed. Without it this is just a spin that happens to travel — try commenting the filter out to see how much work it is doing. It loops here so you can watch it; on a real arrival add data-wm="once" and it plays a single time and holds.
NF
The class is wm wm-speed-roll — the first half is the marker the trigger and reduced-motion rules hook into, the second is the effect.